body {
    background-color: #a68064;
}

.board {
    display: flex;
    flex-wrap: wrap;
    width: 750px;
    height: 750px;
    border: 1px solid black;
    margin: auto;
}

.square {
    width: 50px;
    height: 50px;
    border: 1px solid black;
    box-sizing: border-box;
    font-size: 4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.chess {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.black {
    background-color: black;
}

.white {
    background-color: white;
}
